Lanark, IL

Current conditions, hourly and 7-day forecast, and live radar for Lanark, IL 61046. Right now: partly cloudy then patchy fog, 60°F. Data from the National Weather Service.

• Tonight: Patchy fog after 4am. Partly cloudy, with a low around 60. Northwest wind around 5 mph.
• Thursday: Patchy fog before 9am. Mostly sunny. High near 79, with temperatures falling to around 77 in the afternoon. North wind around 5 mph.
• Thursday Night: Clear, with a low around 55. East wind 0 to 5 mph.
• Friday: Sunny, with a high near 79. Southeast wind 0 to 10 mph.
• Friday Night: Mostly clear, with a low around 61.
• Saturday: A chance of rain showers between 7am and 1pm. Mostly sunny, with a high near 82. Chance of precipitation is 30%.